<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
<!--建议放在body下面-->
<script>
    //console.log(111);/*打印语句*/
    var num =10;/*赋值*/

    // for(var i = 1 ; i<=num ; i++){
    //     console.log(i);
    // }

    var num = 3.5;
    console.log(num);
    console.log(boolean(1));
</script>
</html>